高校化学工程学报2011，Vol.25Issue(4)：670-675,6.
阳离子含氟核壳苯丙乳液聚合的制备和表征
Preparation and Characterization of Cationic Fluorinated Poly-Styrene-Acrylic Latexwith Core-Shell Structure
摘要
Abstract
Cationic fluorinated poly-styrene-acrylate (PSA) latex particles with core-shell structure was prepared by seeded semi-continuous emulsion polymerization. Effects of emulsifier, initiator dosage, amount of crosslinking agent and reaction temperature on the stability of emulsion polymerization were studied and optimized. The chemical components of copolymer, micro-morphology of latex particles and surface chemical composition of latex film were characterized by FT-IR, TEM and XPS, respectively. Water resistance, anti-acid/alkaline properties and thermal stability of the latex film were tested by WCA (Water contact angle) and TGA (Thermal gravity analysis) study. The results show that the stable cationic emulsion can be obtained when the experiment conditions are as follows: [CTAB+OP-10(1:1)] =1.5%(wt), [I] = 0.6%(wt), T= 70℃, [N-MA] = 3.0%(wt), PAP] =1.5%(wt). FT-IR spectra analysis confirms that the fluorine monomer can be introduced into the latex particles through emulsion polymerization. TEM observation identifies the formation of the core-shell structure particles. XPS study further indicates that the fluorine groups have a tendency of migrating to the film-air surface. Water contact angle, chemical resistance test and TGA study show that the core-shell fluorinated PSA latex films with 8.0%(wt) of fluorine monomer content exhibit excellent properties of water repellency, chemical resistance and thermal stability..关键词
阳离子乳液/含氟乳液/核壳结构/稳定性Key words
cationic emulsion/ fluorine-containing latex/ core-shell structure/ stability分类
化学化工引用本文复制引用
徐桂龙,文秀芳,皮丕辉,郑大锋,程江,杨卓如..阳离子含氟核壳苯丙乳液聚合的制备和表征[J].高校化学工程学报,2011,25(4):670-675,6.基金项目
广东省科技计划项目资助课题(2009B01 1000010) （2009B01 1000010）
广东省科技攻关项目(2010B060900002). （2010B060900002）
